/Engine/Source/Runtime/NavigationSystem/Public/NavigationData.h
Debug.
void DrawDebugPath ( [FNavigationPath](API\Runtime\NavigationSystem\FNavigationPath) * Path, const [FColor](API\Runtime\Core\Math\FColor) PathColor, class [UCanvas](API\Runtime\Engine\Engine\UCanvas) * Canvas, const bool bPersistent, const uint32 NextPathPointIndex ) const